SEGMENT INFORMATION - Financial information for segments (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2026 USD ($) segment	Mar. 31, 2025 USD ($)
SEGMENT INFORMATION
Number of reportable segment | segment	2
Revenue, net	$ 31,644	$ 34,031
Cost of revenue	26,669	29,702
Selling, general and administrative	6,042	6,487
Loss from operations	(1,067)	(2,158)
Other expense	(81)	(51)
Interest expense	(485)	(541)
Consolidated loss before income taxes	(1,633)	(2,750)
Total assets	32,272	33,527
Property, plant and equipment, net	10,874	13,791
Depreciation and amortization	2,794	2,796
Gross capital expenditures	3,265	4,122
Operating segments
SEGMENT INFORMATION
Revenue, net	32,252	34,163
Cost of revenue	26,669	29,702
Selling, general and administrative	5,340	5,843
Loss from operations	(365)	(1,514)
Intersegment elimination
SEGMENT INFORMATION
Revenue, net	(608)	(132)
Corporate and unallocated
SEGMENT INFORMATION
Corporate general costs	(702)	(225)
Costs related to terminated acquisition		(419)
Ranor
SEGMENT INFORMATION
Revenue, net	16,890	18,165
Total assets	11,669	11,781
Property, plant and equipment, net	5,344	7,247
Depreciation and amortization	1,047	1,044
Gross capital expenditures	3,265	4,052
Ranor | Operating segments
SEGMENT INFORMATION
Revenue, net	16,946	18,165
Cost of revenue	10,566	12,491
Selling, general and administrative	2,552	2,545
Loss from operations	3,772	3,129
Ranor | Intersegment elimination
SEGMENT INFORMATION
Revenue, net	(56)
Stadco
SEGMENT INFORMATION
Revenue, net	14,754	15,866
Total assets	20,603	21,746
Property, plant and equipment, net	5,530	6,544
Depreciation and amortization	1,747	1,752
Gross capital expenditures		70
Stadco | Operating segments
SEGMENT INFORMATION
Revenue, net	15,306	15,998
Cost of revenue	16,103	17,211
Selling, general and administrative	2,788	3,298
Loss from operations	(4,137)	(4,643)
Stadco | Intersegment elimination
SEGMENT INFORMATION
Revenue, net	$ (552)	$ (132)